An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

This abandoned boat was left in place thanks to its rotting beauty.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Look closely and you’ll notice that the color changes a third of the way up the tower.

35,000 grape hyacinths flow like water down a garden hill.

Memorial built in 1922 in remembrance of WWI casualties.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

A comic book store got the road by its shop officially renamed after Superman's girlfriend.

A fitting attraction for the corn capital of the world.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Historic Hull Street was actually the first street with a proper name in the Boston area.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A bit of retro transportation flair preserved in the world's largest department store.

An eccentric inventor's castle home with its own indoor weather system.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A small but immensely extravagant palace built by the "Night King."

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...